Requestor submits a request to TimeCertain Time Stamp Authority (TSA) Proxy and receives a response containing a time stamp token

The request contains a digital signature of the digital data to be time stamped; signed data can be files (documents, records, metadata, streams, strings, objects, logs, etc.)

The TST is composed of the submitted digital signature, the TSA time element, and a cryptographic binding of the hash values to the time element, which provides authentication of the TSAto the requestor and the verifier.